Name: SmartShunt 500A
Brand: Victron Energy
Availability: InStock

Technical & Electrical Specifications

Max Current Rating

500 A

Terminal Pinouts & Hardware Connections

Verify physical terminal sizes, stud threads (M6, M8, M10), and circuit polarity before crimping lugs or running wiring.

Hardware terminal connection details and stud sizes for SmartShunt 500A
Terminal Label	Polarity / Type	Nominal Voltage	Physical Hardware	Location
BAT- battery_side	- DC Negative	12.0V	Standard Terminal	Left Panel
LOAD- load_side	- DC Negative	12.0V	Standard Terminal	Right Panel
V_SENSE aux_pos	+ DC Positive	12.0V	Standard Terminal	Top Panel
VED ve_direct	Data	12.0V	Standard Terminal	Bottom Panel

Installation Safety Standard: Always size circuit protection (ANL, MIDI, or MEGA fuses) to protect the cable run attached to these terminals against dead shorts and thermal overload, in compliance with AS/NZS 3001, AS/NZS 3004, and ABYC E-11 standards.

Official Product Manual & Wiring Guidelines

Manufacturer technical instructions, safety precautions, and troubleshooting procedures.

1. Safety Precautions

WARNING: BATTERY SAFETY
The battery terminals can deliver thousands of Amps if short-circuited. Ensure all connections are tight and properly insulated. Use insulated tools at all times.

QUALIFIED PERSONNEL ONLY
REDARC/Victron Energy recommends that the SmartShunt be installed by a suitably qualified person. Do not operate the system unless you have read and understood this manual.

1.1 General Safety Precautions

Read this manual carefully before using the equipment.
The SmartShunt is rated IP21 — it is not waterproof and must be mounted in a dry location.
The product contains no user-serviceable components.
Ensure correct polarity when connecting; incorrect wiring can damage the unit.

1.2 Battery Safety Warnings

Batteries can generate explosive hydrogen gas. Keep sparks and flames away.
Ensure adequate ventilation around batteries.
In case of contact with battery acid, rinse immediately with plenty of water and seek medical attention.

1.3 Transport and Storage

Store in a dry environment.
Storage temperature: -40°C to +50°C.

2. Product Description

2.1 The Battery Monitor

The SmartShunt is an all-in-one battery monitor. It measures battery voltage, current, power, consumed amp-hours and state of charge. The SmartShunt is a shunt-based battery monitor; the current is calculated by measuring the voltage drop across a precision shunt resistor. It is available in 300A, 500A, 1000A and 2000A variants.

Unlike a regular shunt, the SmartShunt has built-in Bluetooth and is designed to be a complete, stand-alone battery monitor. It can be paired with the VictronConnect app for configuration and real-time monitoring.

2.2 Why Should I Monitor My Battery?

Many battery problems are caused by undercharging, overcharging, or excessive deep discharge. A battery monitor helps you to track and manage your battery's state of charge, giving you crucial insight into remaining capacity and preventing damage.

2.3 Sizing

The SmartShunt is available in 300A, 500A, 1000A, and 2000A versions. The maximum continuous current through the shunt should not exceed its rated capacity. Select the appropriate model based on your system's maximum expected current.

VictronConnect App: The free VictronConnect app (iOS/Android/macOS/Windows) connects via Bluetooth for real-time monitoring, configuration, historical data analysis, and firmware updates.

2.4 Accessories

Temperature sensor (optional, ASS000100000): Connects to the Aux terminal for battery temperature monitoring.
VE.Direct cable: For connection to a GX device (Cerbo GX, Venus GX, etc.).
VE.Direct Bluetooth Smart Dongle (ASS030536011): Extends Bluetooth range when the built-in signal is insufficient.

3. Technical Specifications

General
Models	300A / 500A / 1000A / 2000A
Supply Voltage Range	6.5 – 70 VDC
Current Draw	< 1mA
Aux Input Voltage Range	6.5 – 70 VDC
Battery Capacity Range	1 – 9,999 Ah
Operating Temperature	-40°C to +50°C (-40°F to +120°F)
Aux Monitoring	Second battery voltage, midpoint, or temperature
Temperature Measurement	-20°C to +50°C (with optional sensor)
VE.Direct Port	Yes
Built-in Bluetooth	Yes (10–15m range)
Protection Category	IP21

Resolution & Accuracy
Current Resolution	± 0.01A
Voltage Resolution	± 0.01V
Amp-hours Resolution	± 0.1 Ah
State of Charge	± 0.1%
Time-to-go	± 1 min
Temperature	± 1°C / °F
Current Measurement Accuracy	± 0.4%
Voltage Measurement Accuracy	± 0.3%
Offset (300A/500A/1000A/2000A)	< 10 / 10 / 20 / 40 mA

Dimensions (h × w × d)
300A	44 × 120 × 44 mm
500A	46 × 120 × 54 mm
1000A	68 × 168 × 75 mm
2000A	68 × 168 × 100 mm

Shunt Connections & Standards
Shunt Bolt (300A)	M8
Shunt Bolt (500A/1000A/2000A)	M10
Cables Included	2 × red 1.5m cables with 1A slow-blow fuse
Temperature Sensor	Optional (ASS000100000)
Safety Standard	EN 60335-1
EMC Standards	EN-IEC 61000-6-1 / 61000-6-2 / 61000-6-3
Automotive Standard	EN 50498

4. Installation & Wiring

4.1 What's in the Box

SmartShunt unit
Two 1.5m (59") red cables with fuse (one for Vbatt+, one for Aux)

4.2 Mounting

The SmartShunt is rated IP21 and must be mounted in a dry location. It has two 5.5mm mounting holes in the base. Use appropriate screws or bolts (not included) to secure the unit to a solid surface.

4.3 Connections Overview

Terminal	Connection	Type
A	SYSTEM MINUS (LOAD-)	M10 bolt (300A: M8)
B	BATTERY MINUS (BAT-)	M10 bolt (300A: M8)
C	VE.Direct	VE.Direct terminal
D	Aux	Ferrule pin terminal
E	Vbatt+	Ferrule pin terminal

4.4 Basic Electrical Connections

CRITICAL: ALL negative cables from loads, chargers, inverters, and solar chargers must be connected to the SYSTEM MINUS (LOAD-) side of the shunt. No other connections should be made to the BATTERY MINUS side or the negative battery terminal directly. Otherwise, current will bypass the shunt and readings will be inaccurate.

Connect the negative battery terminal to the M10 bolt on the BATTERY MINUS side. Torque: max 21Nm (300A: 10Nm).
Connect the negative of the electrical system to the SYSTEM MINUS side. Torque: max 21Nm (300A: 10Nm). All DC loads, inverters, battery chargers and solar chargers must be connected here.
Push the ferrule pin of the red fused cable into the Vbatt+ terminal.
Connect the M10 ring terminal end to the positive battery terminal.

The battery monitor is now powered up — the Bluetooth LED will start blinking.

4.5 Auxiliary Connections (Optional)

The Aux terminal can monitor one of the following:

Second Battery Voltage: Connect the second red fused cable from the Aux terminal to the positive of a second battery (e.g., starter battery). The second battery's negative must be connected to the SYSTEM MINUS side.
Midpoint Monitoring: Connect the Aux cable to the midpoint of a series battery bank for deviation monitoring.
Temperature Monitoring: Connect the optional temperature sensor (sold separately) to the Aux terminal. The sensor ring connects to the negative battery terminal.

4.6 GX Device Connection

Connect the SmartShunt to a GX device (e.g., Cerbo GX) using a VE.Direct cable. This provides real-time battery data on the GX device and the VRM online portal.

5. Configuration

Configure the SmartShunt using the VictronConnect app (Bluetooth or USB). After making the physical connections, the following essential settings should be configured:

5.1 Essential Settings

Setting	Description	Default
Battery Capacity	Set to the total Ah capacity of your battery bank	200 Ah
Charged Voltage	Voltage at which battery is considered fully charged	14.0V (12V system)
State of Charge	Set initial SoC if battery is not fully charged	100%
Aux Input Function	Select: Starter battery, Midpoint, or Temperature	Starter battery

5.2 Lithium Battery Settings

For LiFePO4 batteries, set the Peukert exponent to 1.05 and the Charge Efficiency Factor to 99%. Set the Discharge Floor as recommended by your battery manufacturer (often 20% for lithium).

5.3 Battery Settings Detail

Setting	Description	Default
Discharge Floor	SoC level at which battery is considered empty	50%
Tail Current	% of battery capacity below which current is considered "charged"	4.0%
Charged Detection Time	Time the charged conditions must be met	3 min
Peukert Exponent	Compensates for higher discharge rates (1.05 for lithium, 1.25 for lead-acid)	1.25
Charge Efficiency Factor	Ratio of energy out vs energy in (99% lithium, 95% lead-acid)	95%
Current Threshold	Below this, current reads as zero	0.10A
Time-to-go Averaging	Averaging period for time-to-go calculation	3 min

5.4 DC Meter Mode

The SmartShunt can also be configured as a DC energy meter instead of a battery monitor. In this mode, it measures DC current and power of a specific device (e.g., solar charger, wind turbine, or DC load). When configured as a DC meter, the SmartShunt is visible on the GX device and VRM portal.

6. Troubleshooting

LED Status Codes

Bluetooth LED blinking: Not connected (pairing available).
Bluetooth LED solid: Connected to a device.
Bluetooth LED off: Bluetooth is disabled in settings.

Common Issues

Symptom	Possible Cause	Remedy
Unit is dead	Blown fuse in the Vbatt+ cable or no battery voltage.	Check the fuse in the red cable. Verify battery voltage is within 6.5–70V range.
SoC not showing	Monitor has not yet synchronised.	Fully charge the battery and keep it charged until the SoC resets to 100%, or manually set the SoC in VictronConnect.
Incorrect current reading	Current-carrying cable bypasses the shunt.	All negative cables (loads, chargers, inverters) must go through the SYSTEM MINUS side. Check the BATTERY MINUS side has only the battery negative terminal.
Current reading while no current flows	Shunt offset calibration needed.	Use the Zero Current Calibration feature in VictronConnect (ensure no actual current is flowing first).
SoC does not reach 100%	Charged voltage setting is too high or tail current too low.	Lower the Charged Voltage setting or increase the Tail Current percentage.
SoC always shows 100%	Shunt is wired in reverse or battery negative is on wrong side.	Verify that the battery negative goes to BATTERY MINUS and all loads go to SYSTEM MINUS.
Cannot connect via Bluetooth	Out of range, interference, or Bluetooth disabled.	Move closer (10–15m range). Re-enable Bluetooth via VE.Direct USB adapter if disabled. Metal enclosures reduce range — consider VE.Direct Bluetooth Smart Dongle.
Charge/discharge current inverted	Reversed measurement direction.	Change the "Current measurement direction" setting in VictronConnect.

Bluetooth Range Note: The shunt and electric cables negatively influence Bluetooth range. The resulting range of 10–15m is satisfactory in most cases. If range is unacceptable (e.g., in metal chassis or hulls), add a VE.Direct Bluetooth Smart Dongle and disable the built-in Bluetooth.

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